Hey lovelies! So last month I started my period on the 5th when it was supposed to be due on the 9th and my flow was very less. It did not feel like the first or second day flow we all usually bear, but it was very less. Now for the next month Oct I'm supposed to be due on the 3rd or 5th as per <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> calendar but I still started on the 29th. twice in September? :( should I be concerned about it or this is Normal? I know I'm not pregnant and neither have I missed any period earlier. they are always regular but this sudden change concerns me.

NEED HELP!